If you had only one jersey to ride in all year round, the long-sleeve Hummvee should probably be it. A dense polypropylene weave gives protection from the elements, dries very quickly and rapidly wicks sweat away.
Mesh panels under the arms and on the shoulders do a decent job of cooling you down, while a half-length chest zip gives extra ventilation when you need it.
Other features include a triple rear pocket, a glasses wipe, a semi-elasticated waist and reflective zip piping. We’re fans.